5 v 5 Same Champions

Such a fun game, but i am wondering, can we get banned for joining a custom 5v5 same champion? It's the most fun i ever had on league, seeing the same champions go head to head, my god. but will we get perma banned?

Low down on this gam emode is thus;
The game host is the one who will be banned for moding the client.
While Riot aren't going to chase down everyone, and they DO like the game idea, they want all of these games to stop. It may be in the works but currently it could crash the servers or inadvertantly cause damage to computers etc.